Abstract
The phase behavior of quaternary microemulsion systems with a technical-grade nonionic surfactant (C8/10 alkyl polyglucoside) and different medium-chain alcohols (including the monoterpene geraniol) as cosurfactants is studied at 25 °C. Contour diagrams of the three-phase body at constant oil-to-water ratio have been mapped in terms of the mass fraction variables γ (surfactant + alcohol) and δ (relative amount of alcohol in the surfactant + alcohol mixture). Significant differences in the phase behavior of systems based on the pure alkyl glucoside β-C8G1 and those with the technical-grade C8/10 APG are observed. Specifically, at high δ an anomalous shape of the three-phase region, or a second narrow three-phase region appears in systems with C8/10 APG, which is absent in systems based on β-C8G1. Whereas at δ=0.5 all systems exhibit a phase inversion 2-3-\(\bar 2\) on increasing γ, a retrograde transition 2-3-2 is observed at high δ. The anomalous shape of the three-phase body can lead to a phase sequence 2-3-\(\bar 2\)-3-2* with a reentrant 2* state, on increasing δ at constant γ. It is argued that the reentrant 2* state is due to a preferential extraction of the more lipophilic oligomers of the technical-grade surfactant into the oil phase, causing the interfacial film to become more hydrophilic again, as δ is increased.
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Kahlweit M, Busse G, Faulhaber B (1995) Langmuir 11:3382
Kunieda H, Ushio N, Nakano A, Miura M (1993) J Colloid Interface Sci 159:37
Stubenrauch C, Kutschmann E-M, Paeplow B, Findenegg GH (1996) Tenside Surf Det 33:237
Stubenrauch C, Paeplow B, Findenegg GH (1997) Langmuir 13:3652
Fukuda K, Söderman O, Lindman B, Shinoda K (1993) Langmuir 9:2921
Balzer D (1993) Langmuir 9:3375
Kutschmann E-M, Findenegg GH, Nickel D, v. Rybinski W (1995) Colloid Polym Sci 273:565
Penders MHGM, Strey R (1995) J Phys Chem 99:10313
Kunieda H, Nakano A, Pes MA (1995) Langmuir 11:3302
Kunieda H, Nakano A, Akimaru M (1995) J Colloid Interface Sci 170:78
Graciaa A, Lachaise J, Cucuphat C, Bourrel M, Salager JL (1993) Langmuir 9:3371
Kahlweit M, Strey R, Busse GJ (1191) J Phys Chem 95:5344
Henkel KGaA (1997) Alkyl Polyglycosides. Hill K, v. Rybinski W, Stoll G (eds) VCH, Weinheim
Koeltzow DE, Urfer AD (1984) J Am Oil Chem Soc 61:1651
Rosevear P, Van Aken T, Baxter J, Ferguson-Miller S (1980) Biochemistry 19:4108
Fischer E (1895) Ber Chem Ges 28:1145
Kahlweit M, Strey R (1987) J Phys Chem 91:1553
Bonkhoff K, Hirtz A, Findenegg GH (1991) Physica A 172:174
Sottmann T, Strey R (1996) Ber Bunsenges Phys Chem 100:237
Strey R (1994) Colloid Polym Sci 272:1005
Nikas YJ, Purvada S, Blankschtein D (1992) Langmuir 8:2680
Marszall L (1987) In: Schick MJ (ed) Nonionic Surfactants, Surfactant Sci Series, Vol 23. Marcel Dekker, New York, p 493
Kahlweit M, Strey R, Haase D, Firman P (1988) Langmuir 4:785
Salager JL, Márquez N, Antón RE, Graciaa A, Lachaise J (1995) Langmuir 11:37
Ysambertt F, Anton R, Salager JL (1997) Colloids Surfaces A: Physicochem Eng Aspects 125:131
Kahlweit M, Strey R (1985) Angew Chem 97:655
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© 1998 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
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Stubenrauch, C., Mehta, S.K., Paeplow, B., Findenegg, G.H. (1998). Microemulsion systems based on a C8/10 alkyl polyglucoside: A reentrant phase inversion induced by alcohols?. In: Rehage, H., Peschel, G. (eds) Structure, Dynamics and Properties of Disperse Colloidal Systems. Progress in Colloid & Polymer Science, vol 111. Steinkopff. https://doi.org/10.1007/BFb0118116
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DOI: https://doi.org/10.1007/BFb0118116
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